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Transformer Primary & Secondary Protection based on National Electrical Code

Transformer Primary & Secondary Protection based on National Electrical Code

by EE-Fundamentals | Oct 23, 2020 | Power Systems, Protection & Control

Part of our job as an engineer is to check the design of other designers, engineers and of electrical product manufacturers. We call this QA/QC or Quality Assurance and Quality Control. Most companies have this system in place. It is a process to make sure that...
Power Systems Protection & Control – The Anti-Pumping Relay Application

Power Systems Protection & Control – The Anti-Pumping Relay Application

by EE-Fundamentals | Aug 8, 2020 | Power Systems, Protection & Control

Background – The Anti-Pumping Relay Function In power systems protection, the control circuits of circuit breakers are designed in such a way to prevent the circuit breaker from closing and opening multiple times successively as it will damage the breaker...
Effects of Harmonic Currents on Power System Part 2

Effects of Harmonic Currents on Power System Part 2

by EE-Fundamentals | Feb 15, 2020 | Power Systems, Protection & Control

This is the continuation of Part 1 where we established the theory behind this subject and also proved by using calculations and by plotting the sine wave curves of fundamental and 3rd harmonic currents. Let us then try to investigate why 3rd harmonic currents seems...
Effects of Harmonic Currents on Power System Part 1

Effects of Harmonic Currents on Power System Part 1

by EE-Fundamentals | Feb 14, 2020 | Power Systems

Click on the Registration link above for a Free Account so you can access training and videos as I add them as we go along. For those interested to get a copy of a Professional Electrical Engineer (Philippines) Technical Engineering Report HERE, login required to...
Transformer Vector Groups Basic Concepts – Part 2

Transformer Vector Groups Basic Concepts – Part 2

by EE-Fundamentals | Feb 11, 2020 | Power Systems

Click on the Registration link above for a Free Account so you can access training and videos as I add them as we go along. In Part 1 (Click Here to read part Part 1), we laid out some basic concepts and background for transformer vector groups. We did some...
Transformer Vector Groups Basic Concepts – Part 1

Transformer Vector Groups Basic Concepts – Part 1

by EE-Fundamentals | Feb 4, 2020 | Power Systems, Protection & Control

Click on the Registration link above for a Free Account so you can access training and videos as I add them as we go along. Introduction The International Elctrotechnical Commission (IEC) has established a method of recognizing the configurations of high voltage and...
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